978868420 has 24 divisors (see below), whose sum is σ = 2058392448. Its totient is φ = 391020000.

The previous prime is 978868367. The next prime is 978868433. The reversal of 978868420 is 24868879.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17566 + ... + 47605.

It is an arithmetic number, because the mean of its divisors is an integer number (85766352).

Almost surely, 2^978868420 is an apocalyptic number.

It is an amenable number.

978868420 is an abundant number, since it is smaller than the sum of its proper divisors (1079524028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

978868420 is a wasteful number, since it uses less digits than its factorization.

978868420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65931 (or 65929 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 52.

The square root of 978868420 is about 31286.8729661499. The cubic root of 978868420 is about 992.9059332214.

The spelling of 978868420 in words is "nine hundred seventy-eight million, eight hundred sixty-eight thousand, four hundred twenty".